[1]王肖辉,杜镀,韩超.台阶法隧道掘进爆破时地表及邻近隧道的振动响应[J].爆破器材,2020,49(05):54-58.[doi:10.3969/j.issn.1001-8352.2020.05.010]
　WANG Xiaohui,DU Du,HAN Chao.Vibration Response of Ground and Adjacent Tunnel under Bench Blasting for Tunnel Excavation[J].EXPLOSIVE MATERIALS,2020,49(05):54-58.[doi:10.3969/j.issn.1001-8352.2020.05.010]
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台阶法隧道掘进爆破时地表及邻近隧道的振动响应()
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《爆破器材》[ISSN:1001-8352/CN:32-1163/TJ]

卷:
49
期数:
2020年05
页码:
54-58
栏目:
爆破技术
出版日期:
2020-10-05

文章信息/Info

Title:
Vibration Response of Ground and Adjacent Tunnel under Bench Blasting for Tunnel Excavation
文章编号:
5447
作者:
王肖辉; 杜镀; 韩超
河南建筑职业技术学院(河南郑州,450064)
Author(s):
WANG Xiaohui;  DU Du;  HAN Chao
He’nan Vocational and Technical College of Architecture (He’nan Zhengzhou, 450064)
关键词:
爆破振动; 萨道夫斯基公式; 地表; 邻近隧道; ANSYS/LSDYNA
Keywords:
blasting vibration;  Sadovsky Formula;  ground;  adjacent tunnel;  ANSYS/LS-DYNA
分类号:
TD235
DOI:
10.3969/j.issn.1001-8352.2020.05.010
文献标志码:
A
摘要:
在隧道掘进爆破设计时，基于最小二乘法，得到了台阶法爆破施工时地表振速的萨道夫斯基公式，并结合数值分析软件ANSYS/LS-DYNA模拟了爆破振动对邻近隧道的影响。结果表明：地表振动速度随比例距离的增加呈指数形式衰减，上台阶爆破时的K值比下台阶爆破时大，而α值基本不变；邻近既有隧道迎爆侧各测点沿X方向（炮孔径向）振速峰值最大，背爆侧各测点振速峰值最大时的方向是变化的；背爆侧振速峰值远小于迎爆侧，且迎爆侧拱帮位置振速峰值最高，应作为重点支护对象。
Abstract:
In the design of tunnel excavation blasting, based on the least square method, the Sadovsky Formula of surface vibration velocity caused by bench blasting construction was obtained. Meanwhile the influence of blasting vibration on adjacent tunnels was simulated with the numerical analysis software ANSYS/LS-DYNA. The results show that the surface vibration velocity decays exponentially with the proportional distance. K?value obtained by upper bench blasting is larger than that in lower bench blasting, and the attenuation coefficient?α?value is basically not varied. The peak velocity of each measuring point on the front blasting side of the adjacent existing tunnel is the maximum along the X?direction (radial direction of blasthole), and the direction of the peak velocity of each measuring point on the back blasting side is changing when it is the maximum. The peak value of vibration velocity at the back blasting side is far less than that at the front blasting side, and the peak value of velocity at the side wall of the front blasting side is the highest. It should be the key support object.

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备注/Memo

备注/Memo:
收稿日期：2020-01-02
第一作者：王肖辉（1992－），男，硕士，助教，主要从事土木工程相关的教学工作。E-mail:wxh12271913@163.com
更新日期/Last Update: 2020-10-05